<template>
  <div class="person">
    <h1>情况五：监视上述多个数据</h1>
    <h2>姓名：{{ person.name }}</h2>
    <h2>年龄：{{ person.age }}</h2>
    <h2>汽车：{{ person.car.c1 }}、{{ person.car.c2 }}</h2>
    
    <button @click="changeName">修改名字</button>
    <button @click="changeAge">修改年龄</button>
    <button @click="changeCar1">修改第一台车子</button>
    <button @click="changeCar2">修改第二台车子</button>
    <button @click="changeCar">修改整个车</button>

  </div>
</template>

<script lang="ts" setup name="Person">
  import { reactive,watch } from 'vue';
  //数据
  let person = reactive({
    name:'张三',
    age:18,
    car:{
      c1:'保时捷',
      c2:'迈巴赫'
    }
  });

  //方法
  function changeName(){
    person.name += '~';
    
  }
  function changeAge() {
    person.age += 1
  }
  function changeCar() {
    person.car = {c1:'雅迪',c2:'艾玛'};
  }
  function changeCar1() {
    person.car.c1 = '奥迪';
  }
  function changeCar2() {
    person.car.c2 = '大众';
  }

  //情况五：监视多个数据
  watch([()=>person.name,()=>person.car.c1], (newValue,oldValue)=>{
    console.log(newValue, oldValue);
  })
  
</script>
<style scoped>
  .person {
    background-color: skyblue;
    box-shadow: 0 0 10px;
    border-radius: 10px;
    padding: 20px;
  }
  button {
    margin: 0 5px;
  }
  li {
    font-size: 20px;
  }
</style>